IR IR3477高效15A直流电源解决方案
IR 公司的IR3477 SupIRBuckTM是容易使用的全集成高效DC/DC转换器,可提供输出电压精确控制的15A电流.输入电压3V-27V,输出电压0.5V-12V,其它特性还包括预偏置起动,非常精密的0.5V基准电源,欠压/过压关断,热保护,电源正常输出等.主要应用在笔记本和台式电脑,消费类电子如STB,LCD,TV和打印机,POL DC/DC转换器等.本文介绍了IR3477主要特性,方框图,演示板电路图和材料清单, IRDC3477 评估板主要特性,电路图和材料清单.
The IR3477 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC voltage regulator. The onboard constant on time hysteretic controller and MOSFETs make IR3477 a space‐efficient solution that delivers up to 15A of precisely controlled output voltage.
Programmable switching frequency, soft start, and thermally compensated over current protection allows for a very flexible solution suitable for many different applications and an ideal choice for battery powered applications.
Additional features include pre‐bias startup, very precise 0.5V reference, under/over voltage shutdown, thermal protection, power good output, and enable input with voltage monitoring capability.
IR3477主要特性:
Input Voltage Range: 3V to 27V
Output Voltage Range: 0.5V to 12V
Continuous 15A Load Capability
Constant On‐Time Control
Compensation Loop not Required
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